Archival Diagnostics for Potential Background Contaminantsof Project Hephaistos Dyson Sphere Candidates

arXiv:2607.03619 · astro-ph.SR, astro-ph.GA · Submitted 2026-07-03 · Read on arXiv

Jodrell Bank Centre for Astrophysics, University of Manchester, UK · University of Malta, Malta · Department of Physics and Astronomy, Uppsala University, Sweden · Department of Physics and Astronomy, Uppsala University, Sweden · University of Malta, Malta · Center for Exoplanets and Habitable Worlds, The Pennsylvania State University, USA · Department of Astronomy, Stockholm University, Sweden

astro-ph.SR, astro-ph.GA

Submitted: 2026-07-03

Updated: 2026-09-12

Comments: 16 figures, 13 tables. Presented at IAUS 404: Advancing the Search for Technosignatures (March 2026). Accepted by the MNRAS

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• AGN — 27× in this paper · explained in 1 episode
• Alignment — 6× in this paper · explained in 1 episode
• Core — 3× in this paper · explained in 2 episodes
• Active Galactic Nucleus — 2× in this paper
• alpha — 2× in this paper · explained in 1 episode
• Aperture — 1× in this paper · explained in 1 episode
• Aperture Photometry — 1× in this paper · explained in 1 episode
• Degeneracy — 1× in this paper · explained in 3 episodes
• Monthly Notices of the Royal Astronomical Society — 1× in this paper
• Rapid ASKAP Continuum Survey — 1× in this paper
• Verification — 1× in this paper · explained in 2 episodes

Sources

• Did WISE detect Dyson Spheres/Structures around Gaia-2MASS-selected stars?
• The Pan-STARRS1 Surveys
• Project Hephaistos -- III. Characterizing anomalous infrared sources identified as Dyson-sphere candidates

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